Disk harrow.



J. ULSON.

DISKHARROW.

APPLIOATION FILED SBPT.16,1911.

PatentedAp. 29, 1913.

2 SHEETS-SHEET 1.

'Patented A111229, 1913 2 SHEETS-SHEET Z.

arras sierras PATENT FFE.

JOH OLSON, OF BRADLEY, ILLNOIS. ASSGNOR TO SEARS. BOEBUCK AND COMPANY', OF CHICAGO, ILLINOIS, A CORPORATION OF V YORK.

DISK Hannow rooaeso.

Specificatie-n ot' Letters Pate at.

Pat ent ed Apr. 29, 191

Application led September 16'. i911. Serial No. 649.662,

lil all' w/to//t if may concer/L.'

le ttknown that l, JonN OrsoN, a c1ttzen of the United States. residing at l r^.1d.

ley. in the county ot Kankakee and tate ot Illinois, have invented certain new and uset'ul Improvements in Disk llarrows. ot' which the following is a specilieation, reference being had to the' accompanying drawings: i

My invention relates to agricultural implements. and has particularly to do with disk harrows. .i lt has tor its objectpto provide an improved double disk barrow-that is to say. a harrow comprising front and rear trames arranged tandem, each trame having two sets ot disks or gangs arranged onshat'ts extending transversely of the machine.

illy improvements relate to the construction ot the trames and the manner ot' connecting them together and the ,mechanism tor coutrollii'ig the angular position of the several disk gangs also to mechanism tor applyingv downward pressure to the inner ends ot' the sets of disk gangs connected with one vot the trames.

In the accompanying drawings,-Figure l is a plan view ot' my improved hai-row, the seat-support being removed-and some ot the levers being shown in section; Fig. is a .perspectiveview of part otI one ot the niembers by which the rear frame is locked in position; Fig. 3 is substantially a longitudinal vertical section otA my'improved harrow; Fig. 4 is al vertical cross-section on line 4-4 of Fig. 3; Fig. 5 is a vertical crosssectionl on line 5-5`ot` Fig. 3; and Fig. G`

is a perspective view of the lower part of the lever by which the downward pressure on the inner ends ot the is regulated. l

As best shown in Fig. l, the front frame of my improved harrow comprises a' transtront disk shafts verse bar 7 tixedl secured to a tonft'ue 8 and any suitable way.

braced by braces 9]O. Theouter ends ot said transverse bar T are connected by straps ll-l2 with the outer portions of a paiinot disk gangs l314 of any suitable construction. I prefer, however, to construct the several gangs by mounting a series of disks l5 upon a shaft 1.(3, spacing them apart in best secured to the gangs by meansof clips E lT--lS. as shown iirFig. S, but any other suitable arrangement may beemployed.

NM2() indicate levers tor changing the angular position ot' the front gangs, said levers being mounted at the rear end of the tongue. as shown in Figs. l and 3, and being` provided with the usual locking segments 2l-Q2- The levers ttl-Q0' are connected by straps il 2lwith the inner end portions of the gangs, as shown in Figs. l and 3, so thatI by operating said levers the inner ends ot the trout gangs are moved forward or backward to swing the gangs about pivots -26 which connect their outer end portions with the straps lllz?.

For the purpose ot' pressing down upon the inner end portions ot' the trent gangs to vcause them to penetrate the soil more deeply. l provide a lever 27, which is also mounted on the tongue. preferably in advance of the levers itl-:20, as shown in Fig. 2). and is provided with a locking segment 2S. Preferably instead of mounting the lever 27 directly upon the tongue, it is motilited upon a standard 29- which carries'the segment QS, as shown in Fig. 3. Thevlever 27 is connected by Va connecting bar 30 with bent levers 231-32I arranged at opposite sides ot the tongue and fulcrumed at 33 thereupon. as shown in Figs. 1, 3 and 5. The levers 31 32 are .connected together and to the strap by a bolt 34 so that they operate in unison. The lower ends ot' said levers are bent or shaped to form arms 35-36 which extend rearwardly above the straps Q3- 2.4, as shown in Figs. 3 and 5. 37-38 indicate rollers carried by the arms StL-3G, respectivelyand overlying the straps QwQsl, as shown ir Fig. 5. 39-40 indicate guideplates, which project ,downward outside of and adjacent to the st laps Q3-Q4 for the purpose of holding the rollers 37e-3S' properly in position. Said plates are carried by bolts ll-42, which also form pivots for the rollers 37-38.4 43-44 indi xate bracing straps, which are connected with the levers {SL-32 and with the bolts 414-42. as shown in Figsc and 5, for braring the several parts. By vthis construction the operator, by drawing back the lever 2T. may rock the levers 3ft-32 to cause the rollers E37- 3S to bear down upon the straps 2:4211. therebj pressing down upon the inner ends ot'K the front gangs and causing t-he disks to enter the soil more deeply.

45-46 indicate the rear gangs, which com risc, a number of disks arranged opy posi e to those of the front gangs.

47' indicates a U-shaped bar, Which connects lthe two rear gangs together, said bar being pivotally connected With said gangs bypivots 481-49 which pass through horizontal bars 5051 connected with the gangs by standards 52, or any other suitable means.

53 indicates a transverse bar or frame, -Which is centrally pivoted by a pivot 54 to t-he rear end of a draft-bar 55 which is fixedly secured at its front end to the tongue 8 and extends rearwardly between the front gangs and the point of its attachment to the bar 53. The ends of thev bar 53 are connected by straps 56-57 and pivots 58-59 l withthe outer portions of the rear gangs,

as shown in Fig. 1. The inner portions of thel rear gangs are connected by straps 5859a and levers 60-61 with intermediate portions of the bar 53,'the straps 58u59a being connected with the gangs vby pivots 62-63 so thatby operating said levers the angular position of the rear gangs may be adjusted. lThe levers 60-61 are provided With locking segments 64-65, as shown in Figs. 1 and 3.

. The bar 53 may either be locked in a position perpendicular to the draft-bar 55 or may be left free so that the rear gangs will trail behind the front gangs. This is accomplished by providing the bar 53 with a curved strap 66, the endsA of which are connected with the outer portions of the bar 53 so that the strap 66 extends forward of said bar, as shown in Fig. l. The bar -66 is provided at its center with a notch 67, as shown in Fig. 2, said notch being adapted to receive a latch-bar 68 pivoted at 69 upon a bracket 70 secured to the under side of the draft-bar 55, as shown in Fig. 3. A spring 7l'serves to draw back normally upon the latch-bar 68 and hold it in the notch 67. The latch-bar 68 is operated to move it out of the notch 67 by a lever 72 pivoted at 73 upon the draft-bar 55 and connected by a rod 74 with the latch-bar 68, as shown in Fig. 3. By this construction when the notch 67 is in the position to receive it the latchbar 68 will normally lie in said notch and hold the rear frame in fixed angular relation to the draft-bar 55. By pressing forward on the lever 72, however, the rear frame may be` released, thereby permitting the rear gangs to follow naturally behind the front gangs-thc angulaipositiou of the rear frame .varying naturally. The angular position of the rear gangs may be varied with reference. to the rear frame by operating the levers 60-61.

75 indicates the drivers seat, which 'is carried by a seat-support 76 mounted on the rear portion of the tongue sov that the driver may have the several levers conveniently accessible.

77 indicates caster-wheels, which support the rear portion of the tongue, as shown in Figs. 1 and 3.

While I have described with considerable particularity the embodiment of my invention shown in the accompanying drawings,

I wish it to be understood that my invention is not restricted to the details of the construct-ion shown except in so ,far as they are particularly clalmed, but includes generically the subject-matter of the broader claims` 80 That which I claim as my invention, and desire to secure by Letters Patent, is,-

1. A disk-harrow, comprising front and rear frames, disk gangs connected with said frames, means pivotally connecting saidl front and rear frames together substantially in the longitudinal axis lof the machine, and means for locking said frames in fixed angular relation with each other.

2. A disk-harrow, comprising front and rear frames, disk gangs connected with sad frames, a draft-bar rigidly connected with the front frame centrally thereof and projecting rearwardly therefrom, said rear frame .being pivotally connected substan tially atits center with said draft-bar, and means for locking said rear frame in 'fixed -relation to'said draft-bar.

3. A disk-barrow, comprising front and rear frames, disk gangs connected with said frames, means pivotally connecting said front and rear frames together substantially in the longitudinal axis of the machine, means for locking said frames in ixed angular relation with each other, and means for varying the angular position of the disk gangs connected with the rear frames with reference to said frame.

4. A disk-barrow, comprising front and rear frames, a draft-bar fixedly connected to the front frame and substantially at the center thereof and pivotally connected at the rear with said rear frame, disk gangs con-` nected with said front and rear frames, rc--`' spectively, and means for locking the rear frame in fixed relation with said draft-bar.

5. A disk-barrow, comprising front and rear frames, a vdraft-bar ixedly connected with the front frame and pivotally connected at the rear with said rear frame, diskgangs connected with said front and rear frames, respectively, means for varying the angular adjustment of the several gangs,

`and means for locking the rear frame 111 fixed angular relation with said draft-bar.

6. A disk-barrow, comprising front and rear frames, adraft-bar lixedly connected with the front frame and pivotally connected at the rear with said ,rear frame, diskgangs connected with said front and rear 130 frames, respectively, means for varying the angular adjustment of the several gangs, a iateh for locking said rear frame in fixed relation Wth'the draftbar, and a lever for operating said latch.

7. In a double disk-harro\v, the combination of frontand rear frames comprising transverse-bars, a tongue fixedlyconnected with said front frame, a draft-bar xedly connected with the tongue and pivotally connected at the rear with said rear frame, front and rear disk-gangs, means Connectgangs together.

ingthe outer lportions of vsaid 4disk-gangs with said transverse bars, respectively, means connecting the inner portions of said gangs with the front and rear frames, respectively, comprising levers for varying the angular posit-ion of said gangs, and a- U-shaped bar pivotally connecting the rear v 'JOHN OLSON. Witnesses:

W. R. BOND,

F. L. MARTIN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

